Holster platform



FIG. 1 shows a perspective view of a design for a holster platform;

FIG. 2 shows a front view of the design;

FIG. 3 shows a rear view of the design;

FIG. 4 shows a right view of the design;

FIG. 5 shows a left view of the design;

FIG. 6 shows a top view of the design; and,

FIG. 7 shows a bottom view of the design.

The broken lines depict environmental structure and are included for the purpose of illustration only and form no part of the claimed design. 

CLAIM The ornamental design for a holster platform, as shown and described. 